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What are some everyday uses of the deltoid muscle?
There are three deltoid muscles — posterior, medial and anterior — that give your shoulder its rounded appearance. They work in tandem with upper back, chest and arm muscles such as the pecs, lats, biceps and triceps to move your arms and support your shoulders during weight-bearing activities.
What is the primary action of the deltoid muscle?
The main actions of the deltoid muscle are pulling that arm away from the body where it interacts with the supraspinatus muscle of the rotator cuff, and lifting the arm out in front of the body.
Does the deltoid muscle assist with raising the humerus?
The deltoid muscle is the main muscle that allows you to raise your arm or even hold it out. It is connected to the humerus of the upper arm.
Does the deltoid muscle acts to adduct the arm at the shoulder?
Located superior to the shoulder joint, the deltoid muscle works with the supraspinatus to abduct the arm at the shoulder. On the anterior side of the shoulder, the coracobrachialis, serratus anterior, pectoralis major, and pectoralis minor muscles work as a group to flex and adduct the scapula and humerus anteriorly toward the sternum.
What is the function of the anterior deltoid?
The main function of the anterior deltoid is shoulder flexion — lifting your arm up and to the front of your body. Secondary functions of the anterior deltoid include shoulder abduction — lifting your arm up and to the side — and transverse flexion, or moving your upper arm toward and across your chest.
What is the deltoid process?
The main function of the deltoid muscle, particularly its middle fibers, is to abduct the arm, or lift it laterally away from the body. This action occurs at the glenohumeral , or shoulder, joint, but the attachment of the muscle to the acromion provides the leverage that helps to lift the weight of the arm.